🟥 Once
The Once block allows the Storyline to pass through a default path only once. When the stream passes through the Once block again, it will be redirected to the second out.
![](https://storage.crisp.chat/users/helpdesk/website/4481e69b13b8fc00/17f840fe-32dc-4e74-9367-115852_2lkh69.png)
The Once block is useful if you want to create a "dead end" for example
![](https://storage.crisp.chat/users/helpdesk/website/52147fb41ef1f400/a9de1623-6c28-4d0b-9305-8b1af9_149wcsa.png)
You can also link a boolean variable to do a preventive trigger of the "dead end".
![](https://storage.crisp.chat/users/helpdesk/website/42a684973861ec00/707dafe8-035a-42a3-95dd-de4cc2_10lik8c.png)
![](https://storage.crisp.chat/users/helpdesk/website/4481e69b13b8fc00/17f840fe-32dc-4e74-9367-115852_2lkh69.png)
The Once block is useful if you want to create a "dead end" for example
![](https://storage.crisp.chat/users/helpdesk/website/52147fb41ef1f400/a9de1623-6c28-4d0b-9305-8b1af9_149wcsa.png)
You can also link a boolean variable to do a preventive trigger of the "dead end".
![](https://storage.crisp.chat/users/helpdesk/website/42a684973861ec00/707dafe8-035a-42a3-95dd-de4cc2_10lik8c.png)
Updated on: 29/03/2021
Thank you!